Pile shell



March 7, 1933. F. A. s'cHRoEDl-:R Er AL 1,900,524

PILE SHELL Filed Jan. 15, 1952 2 Sheets-Sheet l lNy ToRgy da. ll

BY a

n /u n ATTORNEYS F. A. scHRoEDr-:R ET AL March 7, 1933.

PILE SHELL Filed Jan. 15. 1932 2 Sheets-Sheet 2 Patented Mar. 7, 1933 UNITED STATES PATENT FREDERICK ANSCHROEDER, OF ROCHELLE PARK, AND ALBERT TWIST, OE RUTHER- FORD, NEW' J'IEIRSEY,V .ASSIGNOLRS` TO RAYMOND CONCRETE PILE. COMPANY, OF NEW YORK, N Y., A CORPORATION OF NEW JERSEY l rILn sHEnrr Y Appnatmn'iea January 15, 1932. serialno; 586,800. Y

"'Ihis invention pertains to shells for concrete piles, with special reference to shells adapted for service in soils containing considerable abrasive material. Under vsuch conditions it has often been found desirable to use a shell having outer casing and inner lining of sheet metal with the space Vbetweeny the metal sheets filled with non-metallic reinforcing material usually in the form of` in Patent No. 1,839,359, which will issue on January 5, 1932 to Maxwell M. Upson and Herman R. Smith.

In that patent the outer casing'is of corrugated metal while the inner lining is of plain metal. In use of that shellV under some conditions, for instance if a number of shells are driven close together before filling, the pressure of the earth may slightly distort the thin lining out of contact with the shell filler at the end of a shell section. If that condition arises at the upper end of a section the concrete falling into the shell during the lling operation may get behind the lining and increase the distortion thereby cutting olf the continuity of the concrete and impairing the quality of the finished pile.

One object of the present invention is to overcome the above difliculty by sufiiciently stilfening the inner lining, as by corrugating it, so it will be able to better resist distortion.

Another object is to provide a reinforced shell having a corrugated surface in contact with the driving core whereby a corrugated driving core may be used in case it is desired to use theV shell in nontapered form, and whereby in driving tapered shells the driving core may more readily be freed from the grip of the shell.

ings which illustrate what is now considered the preferred'embodiment'of the invention.A

Fig. 1 showsa shell in cross-section, after driving and before withdrawal ing core.

Fig. 2 is an enlarged view mostly in section of a shell section.

Fig. 3 is a fragmentary View of a modilied form of the invention. Figs. 4 and 5 show modied forms of the invention, particularly the methodof cou-v pling the shell sections together. y

Fig@ 6 shows another form of the invention. F Fig. 7 is a crossssection on line 7-7 of ig. 6. Referring to Figs. 1 and 2, each shell section comprises a plain outer casing 10 ofL thin material, a corrugated inner lining 12 of thin material, and a filler 14 between casing and lining. The casing vand lining are usually of sheet steel, and the filler is usual-v ly of non-metallic, waterproof material such as cement or concrete. The filler isusually of the drivinserted in liquid form, such as grout, whichv readily completely iills the spaces between caslng and lining, and then hardens to bind the component part-sof the shell section into a unitary structure.

Eachcasing is extended as at 16 to form a socket for receiving an endof the next adjoining section when the sections are assembled'for driving on a Vcore 18, as in Fig. l, in which the core is tapered and the shell sections shaped accordingly. Y

In Fig. 3 the outer diameter oflining'l2 is somewhat less than the inner diameter of casing 10, thus providing clearanceas at 22 vbetween casing and lining at all points, vthe clearance space being, of course, filled with filler. f

In the modification of Fig. 4, casing 10 rises no higher than the top of lining 12, the coupling socket being formed byl a helically corrugated sleeve 24 having its lower end 26 welded to the upper end of casing 10.

The casing of the lower end'of the next higher shell section Ais helically corrugated as at 28 to screw into socket 24. In this modification the metal casing and lining are spaced well apart, therefore filler 14: may extend well down into coupling socket 24. In the embodiment of Fig. 5, however, the threaded lower end 28 of the casing is in contact with lining 12, and the socket is formed not by welding on a socket. 24 but by threading, as at 30, the upwardly extending end of the casing 10. Thus this joint has three thicknesses of metal in close engagement. 1

In the modification of Figs. 6 and 7, vertical reinforcing rods 32 are inserted in the non-metallic filler between casing and lining, and the joint between shell sections is of somewhat different type. An upwardly projecting ring 34 of plain metal is welded to the pper end of the lower casing 10, while the lower ends of casing and lining of the upper shell section are pinched together as at 36 and preferably welded to each other.

Closure of the lower ends of shell sections as in Figs. 5 and 6 prevents flow of grout therethrough and thereby facilitates the filling operation.

It is to be understood that the invention is not limited to thespecific embodiment herein illustrated anu described, but may be used in othervways without departure Vfrom its spirit as defined by the following claims.

l. As an article of manufacture, a permanent pile shell for driving and subsequent filling, comprising in combination, an outer casing of thin material, an inner lining of corrugated material, and a filler of nonmetallic reinforcing material between said casing and said lining.

2. As an article of manufacture, a pile shell for driving on a removable core and for yfilling after removal of the core, comprising in combination, an outer metallic casing of thin material, a corrugated metallic lining adapted to contact with the core during driving and a reinforcing filler of non metallic material between said casing and said lining.

3. The invention set forth in Vclaim 2 in which substantially vertical reinforcing rods are imbedded in said filler.

4. As an article of manufacture, a pile shell for driving on a removable core and for filling after removal of the core, comprising in combination, an outer metallic casing of thin material, a corrugated metal-v lic lining within said casing in contact therewith, and a filler of non-metallic material between the casing and the corrugations of the lining.

5. A permanent pile shell comprising a plurality of sections adapted to enclose a core by which ,theA shell is,V driven, each of said sections comprising an outer plain casing,

an inner corrugated lining and a nonn metallic reinforcing filler between said casing and said lining, said casings being provided at their ends with helically corrugated extensions whereby an end of each section may be screwed into the adjacent end of the next section, in order to couple Said sections together.

6. A permanent pile shell comprising a plurality of sections adapt-ed to enclose a core by which the shell is driven, earch of said sections comprising an outer plain casing, an inner corrugated lining and a nonmetallic reinforcing filler between said casing and saidlining, each of said sections having at one end a socket formed by an extension of said casing and having at itsv other end an extension formed by extensions of said casing and said' lining in Contact with each other, the extensions' at both endsl of the section being helically corrugated whereby the vends of adjoining sections may be screwedtogether to form the pile shell.

7. The invention set forth in claim 6 in which saidV other extension is provided with non-metallic filler between said casing and said lining. i

8. As an article of manufacture, a permanent 'pile shell for driving and subsequent filling, comprising in combination, an outer casing of thin material,` an inner lining of corrugated material, and a filler of nonmetallic reinforcing material between said casing and said lining, said casing and lining being joined together at their ends to provide a closure for the space occupied by the filler. f

In testimony whereof we hereto affix our signatures.

FREDERICK A. SCHROEDER. ALBERT E. TWIST. 

